By Erin Pearson & Tammy Mills

A truck driver accused of attacking two schoolteachers in a violent act of road rage on the Tullamarine Freeway is "withdrawing from ice", a court has heard.

Elten Gevergizyan, 27, appeared handcuffed in the dock of Broadmeadows Magistrates Court on Wednesday where he made no application for bail.

Visibly disheveled and dressed in a long sleeve grey T-shirt, Mr Gevergizyan sat silently throughout his brief court appearance.

Lawyer Mihal Greener told the court her client was withdrawing from the drug ice.

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"He has asthma. And he’d like assistance with ice withdrawal," she said.

"He’s feeling very nauseous. It’s his first time in custody."

Mr Gevergizyan was arrested on Tuesday evening after he allegedly tailgated schoolteachers Leigh Mahady, 62, and Julie Dougherty, 60, as they drove along the Tullamarine Freeway to Melbourne Airport on Saturday afternoon.

It comes as Victoria's top traffic cop Assistant Commissioner Doug Fryer calls for calm on our roads in the wake of another road rage attack in Sunbury, where a mother and her children were terrorised by a violent driver.

He has been charged with multiple offences including conduct endangering life and assault with a weapon.

Magistrate Abigale Burchill remanded Mr Gevergizyan to reappear in the Broadmedows Magistrates Court on June 8.

Road rage assaults have jumped by 60 per cent across Victoria in the past four years, growing from 210 to 380 reported cases, according to Crime Statistics Agency data.

"People are just in a rush to get where they need to be and we just implore everybody just to relax," Assistant Commissioner Doug Fryer said.

"The idea that perfectly reasonable people lose the plot because of a minor traffic altercation or something not letting them in just makes no sense. Chill out."

Mr Fryer rebuffed suggestions of creating a new charge for a road rage offence, saying there were already significant offences in place, including "conduct endangering life" or "recklessly cause injury".

Police Minister Lisa Neville agreed, saying police have the powers they need to hold people to account.

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"We'll have discussions with Victoria Police about any measures that can promote respect on our roads, including education and awareness to minimise driver aggression on our roads," she said.

Shadow Attorney General John Pesutto said something must be done to better protect innocent drivers and passengers.

"In addition to the many announcements we've already made to fix our justice system, we plan to address this escalation in road rage violence if elected later this year and will have more to say in the near future," he said.